Christianity differs from all other religions in that it is built upon the person of Christ, who embodies all approaches to spiritual truth. Paul acknowledges this unique and ontological nature of Christianity when he exclaims, “I know whom [not what] I have believed” (2 Timothy 1:12) and “For God, who said, ‘Let light shine out of darkness,’ made his light shine in our hearts to give us the light of the knowledge of God’s glory displayed in the face of Christ” (2 Corinthians 4:6).